Author nicodevlog
CIFS, SMB and NFS are protocols. And Samba is an implementation of SMB protocol on Linux OS. SMB (Server Message Block) SMB is a network protocol created by IBM for the share of resources (files and printers) in local networks…. Continue Reading →
/var/run/utmp => shows who is currently connected to the system. Not all the programs use utmp, thus you can have more users connected than displayed in utmp. /var/log/wtmp => is an historical record of utmp data /var/log/btmp => record of… Continue Reading →
(french version of this error message: mount: /mnt/refresh : échec de l’appel système mount(2) : Aucun chemin d’accès pour atteindre l’hôte cible.) You need to install cifs-utils cifs-utils brings utilities for the management of mounting points to CIFS servers (SMB… Continue Reading →
Solution to CentOS 8 AppStream Error As explained here, Centos mirrors have been migrated to vault.centos.org. Then the solution is: After this you can again use the yum command but you won’t received recent updates because Centos mirrors are not… Continue Reading →
First: do you know how to run background task not attached to your user session? Running a task attached to your current user session Imagine you establish an ssh connection to your linux host, or you just log into your… Continue Reading →
Run a function in background and get its process ID Instead of creating another script that you call from your primary script you can simply declare a function (inside your primary script or inside another file that you include), and… Continue Reading →
$n Where n is a positive integer and takes values from 1 to a greater value not restricted. n correspond to the position of an argument givent to a script or to a function $? Exit status of the last… Continue Reading →
Ansible ssh key connection Refer to https://nicodevlog.com/2022/05/21/public-key-authentication-on-linux-best-practices-a-more-secure-way-to-connect-to-your-hosts-without-login-and-password/ The advantages of an ssh key over a basic authentication are: no raw password (but you can encrypt passwords using ansible vault) one unique private key to connect to several nodes (but of… Continue Reading →
Note: for the whole article, I will work with a linux user called ansible on a host called also…ansible! 🙂 ssh-keygen When you use ssh-keygen you will generate a private and public key pair. And you’ll have to choose which… Continue Reading →
Note: The following commands are for RockyLinux, RedHat, CentOS, on other distros it will be almost the same. I’ve made the choice to connect to a user called ansible, and inside his home directory I’ve created a directory called ansible,… Continue Reading →